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Why Is My Heat Pump Running But Not Cooling Properly?

Your heat pump often runs but won’t cool because of a clogged filter, dirty coils or fan, incorrect thermostat or fan settings, blocked registers, a broken belt, or loose parts. Rising electric bills, odd smells, or frequent cycling also point to needed service. Boulden Brothers offers same-day heat pump repair in Newark, DE with up-front, no-surprise pricing.

Quick checks:

  • Replace the air filter.
  • Set thermostat to Cool and fan to Auto.
  • Open and clear all registers.

Updated: 2025-12-29 00:00:00


Need help in West Chester, PA? Call (302) 368-3848 or book online.

"Technician Matt did a good job performing the inspection on my heat pump system and explaining the items in need of attention." — Lewis G.

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